usn-5964-2
Vulnerability from osv_ubuntu
Published
2023-03-27 14:47
Modified
2026-06-29 10:53
Summary
curl vulnerabilities
Details

USN-5964-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Harry Sintonen discovered that curl incorrectly handled certain TELNET connection options. Due to lack of proper input scrubbing, curl could pass on user name and telnet options to the server as provided, contrary to expectations. (CVE-2023-27533)

Harry Sintonen discovered that curl incorrectly reused certain FTP connections. This could lead to the wrong credentials being reused, contrary to expectations. (CVE-2023-27535)

Harry Sintonen discovered that curl incorrectly reused connections when the GSS delegation option had been changed. This could lead to the option being reused, contrary to expectations. (CVE-2023-27536)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-27533",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-27535",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-27536",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.35.0-1ubuntu2.20+esm15"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.35.0-1ubuntu2.20+esm15"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.35.0-1ubuntu2.20+esm15"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.35.0-1ubuntu2.20+esm15"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20+esm15?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.35.0-1ubuntu2.20+esm15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.32.0-1ubuntu1",
        "7.33.0-1ubuntu1",
        "7.34.0-1ubuntu1",
        "7.35.0-1ubuntu1",
        "7.35.0-1ubuntu2",
        "7.35.0-1ubuntu2.1",
        "7.35.0-1ubuntu2.2",
        "7.35.0-1ubuntu2.3",
        "7.35.0-1ubuntu2.5",
        "7.35.0-1ubuntu2.6",
        "7.35.0-1ubuntu2.7",
        "7.35.0-1ubuntu2.8",
        "7.35.0-1ubuntu2.9",
        "7.35.0-1ubuntu2.10",
        "7.35.0-1ubuntu2.11",
        "7.35.0-1ubuntu2.12",
        "7.35.0-1ubuntu2.13",
        "7.35.0-1ubuntu2.14",
        "7.35.0-1ubuntu2.15",
        "7.35.0-1ubuntu2.16",
        "7.35.0-1ubuntu2.17",
        "7.35.0-1ubuntu2.19",
        "7.35.0-1ubuntu2.20",
        "7.35.0-1ubuntu2.20+esm2",
        "7.35.0-1ubuntu2.20+esm3",
        "7.35.0-1ubuntu2.20+esm4",
        "7.35.0-1ubuntu2.20+esm5",
        "7.35.0-1ubuntu2.20+esm6",
        "7.35.0-1ubuntu2.20+esm7",
        "7.35.0-1ubuntu2.20+esm8",
        "7.35.0-1ubuntu2.20+esm9",
        "7.35.0-1ubuntu2.20+esm10",
        "7.35.0-1ubuntu2.20+esm11",
        "7.35.0-1ubuntu2.20+esm12",
        "7.35.0-1ubuntu2.20+esm13",
        "7.35.0-1ubuntu2.20+esm14"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-27533",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-27535",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-27536",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.47.0-1ubuntu2.19+esm8"
          },
          {
            "binary_name": "libcurl3",
            "binary_version": "7.47.0-1ubuntu2.19+esm8"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.47.0-1ubuntu2.19+esm8"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.47.0-1ubuntu2.19+esm8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.19+esm8?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.47.0-1ubuntu2.19+esm8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.43.0-1ubuntu2",
        "7.45.0-1ubuntu1",
        "7.46.0-1ubuntu1",
        "7.47.0-1ubuntu1",
        "7.47.0-1ubuntu2",
        "7.47.0-1ubuntu2.1",
        "7.47.0-1ubuntu2.2",
        "7.47.0-1ubuntu2.3",
        "7.47.0-1ubuntu2.4",
        "7.47.0-1ubuntu2.5",
        "7.47.0-1ubuntu2.6",
        "7.47.0-1ubuntu2.7",
        "7.47.0-1ubuntu2.8",
        "7.47.0-1ubuntu2.9",
        "7.47.0-1ubuntu2.11",
        "7.47.0-1ubuntu2.12",
        "7.47.0-1ubuntu2.13",
        "7.47.0-1ubuntu2.14",
        "7.47.0-1ubuntu2.15",
        "7.47.0-1ubuntu2.16",
        "7.47.0-1ubuntu2.18",
        "7.47.0-1ubuntu2.19",
        "7.47.0-1ubuntu2.19+esm1",
        "7.47.0-1ubuntu2.19+esm2",
        "7.47.0-1ubuntu2.19+esm3",
        "7.47.0-1ubuntu2.19+esm4",
        "7.47.0-1ubuntu2.19+esm5",
        "7.47.0-1ubuntu2.19+esm6",
        "7.47.0-1ubuntu2.19+esm7"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-5964-1 fixed several vulnerabilities in curl. This update provides\nthe corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n Harry Sintonen discovered that curl incorrectly handled certain TELNET\n connection options. Due to lack of proper input scrubbing, curl could pass\n on user name and telnet options to the server as provided, contrary to\n expectations. (CVE-2023-27533)\n\n Harry Sintonen discovered that curl incorrectly reused certain FTP\n connections. This could lead to the wrong credentials being reused,\n contrary to expectations. (CVE-2023-27535)\n\n Harry Sintonen discovered that curl incorrectly reused connections when the\n GSS delegation option had been changed. This could lead to the option being\n reused, contrary to expectations. (CVE-2023-27536)\n",
  "id": "USN-5964-2",
  "modified": "2026-06-29T10:53:00Z",
  "published": "2023-03-27T14:47:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5964-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-27533"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-27535"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-27536"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "curl vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2023-27533",
    "UBUNTU-CVE-2023-27535",
    "UBUNTU-CVE-2023-27536"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.